Terson and samuel kohn



(No Mbael.) 2 sheets-sheen 1. C. A. JACOBS.

STEAM ENGINE.

J www@ N. PETERS. Phdo-Uthnqrzphr. Washington, DJ:`

(No Model.) 2 Sheets-Sheet 2. C. A. JACOBS. STEAM ENGINE.

No. 348,563. Patented Sept. 7, 1 886.

UNITED STATES PATENT OFFICE,

CHARLES ARTHUR' JACOBS, OF TOLEDO, OHIO, ASSIGNOB TO JESSE E. PAT- TERSON AND SAMUEL KOHN, OF SAME PLACE.

STEAM-ENGINE.

SPEGIEIGAIIIQN forming part of Letters Patent No. 348,563, dated September 7, 1886.

Application filed February 18,1886. Serial No. 192,420. (No model.)

To all whom it may concern:

Be it Aknown that l, CHARLEs ARTHUR J AooBs, a citizen of the United States, residing at Toledo, in the county ofLucas and State of Ohio, have invented a new and useful lmprovement in Steam Engines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in steam-engines, and has for its object the provision cfa machine of the class named adapted to be operated at a very high rate of speed without liability of its several members being misplaced or otherwise damaged thereby.

Vith this object in view the invention consists of the peculiar combination and novel construction and arrangement of the various parts for service, substantially as hereinafter fully set forth, and particularly pointed out in the claims.

Referring to the drawings, in which similar letters of reference denote similar parts, Figure l represents a plan View of a steam-engine embodying my improvement. Figs. 2 and 3 are views in elevation taken from opposite sides of my improved steam `engine. Fig. 4 is a verticallongitudinal section through the cylinders and piston heads and rods, taken on the line :t :c of Fig. 1. Fig.,5 represents a transverse sectional View taken on the line y y through the cylinder,its steam-chest, induction and cduction ports, and the valve that alternately opens and closes the same. Fig. 6 represents a detached detail view of the valves and links for operating the same. Fig. 7 is a horizontal section through one of the cylinders, its steam-chest, and valve.

In the drawings, A designates the engine bed,upon which the several parts of my invention rests and operates.

c c designate pillow-blocks, that project upwardly from the opposite ends of the bed A, and are provided with hollowed or grooved upper surfaces a,upon which the cylinders B B' rest, and are secured by bolts b.

B B designate the cylinders, two in number, placed and held upon the pillow-blocks a a in alignment with cach other. (See Figs. l and 2.) For convenience of description I will hereinafter describe but one of the cylinders, B, it being understood that the remaining cylinder, BQis in all respects similar to the cylinder4 B.

b designates the body of the cylinder, one end of which, b2, is open. The other or outer end is integral with the body or sides of the cylinder, whereby simplicity of construction. combined with great strength of part-s, is insul-ed to the cylinder, as will be apparent.

b designates flanges, that rest upon the upper surface ofthe pillow-block a, and are secured thereto by bolts b, that pass through apertures b* in said anges b.

Bl designates the steanrchest, made integral with and projecting from one side of the cylinder toward its rear end, as shown. The steam-chest BZ consists, first, in a thick upper wall, b5, in immediate connection with the body of the cylinder; and,secondly,in side and end walls,b6 bl,tl1at project outwardly from the bottom b5, to receive "live steam from the boilers,and to pass the same through a suit able port, be, to the interior of the cylinder B, behind the piston-head operating therein. The steam-chest of each cylinder is cast integral with the cylinder, and projects laterally from the same, the outer end of the chest be ing left open. A cap or inclosing plateyB, is fitted against the outer face of the steamchest, to close the latter, and the cap-plate is detachably secured in place by threaded bolts or pins b, which are permanently and rigidly secured to the steam-chest, and receive securing-nuts b1, which bear against the cap-plate, an elastic packing, B4, of leather, rubber, or like material being interposed between the outer faces of the valvechest and the cap-plate, to effectually prevent the leakage or escape of steam from the chest.

C designates the U -shaped supply-pipe, one end of which is connected with the cap or plate Ba at the middle thereof, to pass steam into the steam-chest B2. f The pipe C is connected at its middle with a straight pipe, C', that extends to the boiler. A port, b, is formed in the cap-plate B3 of the steam-chest, to permit live steam from the supply-pipe Cto fiow through the same into the chamber b of the chest, and when the valve in the chest is opened the steam therefrom escapes into the cylinder through the induction-port ba, as will be readily understood.

b12 designates an opening formed at the side of the port bE in the bottom b5, that extends to and opens into a space, b, opening through the lower edge of the part b5, and receives one Ward through the pillow-block a and bed A.

E designates the valve, preferably in shape of an inverted U-that is to say, having a hol- Y low, e, upon its surface, that rest-s upon the bottoni Z1, which connects at stated periods the port bB with the port t, to permit the eX- haust of steam from the cylinder B to the pipe D. (See Fig. 7.) The valve E is provided upon its outer surface with spurs or lugs e', that project outwardly a short distance to forni a connection for the screw-threaded end f of a link-rod, F, provided within `the steam-chest upon each side of the lugs c with adjusting nuts or burrsf', that secure said rod to the valve E. The rod Fextends outwardly through the inner end of the steam-chest B2, to and is connected to the valve located in the steamchest of the cylinder B', as shown.

f2 designates a splice or adjustable joint, formed in the rod F at a short dist-ance from one of the steam-chests Bi.

fJ designates a clamp used for securing the severed ends of the rod F together' at the point f2, said clamp consisting in an apertured block,

in which the ends of the rod are placed in juxtaposition and held by a set-screw, f4, that projects through the side of the clamp and bears against one of the parts of said rod. The opposite end of said rod is provided with a laterally-prQjecting pin,f5, to which is pivoted one end of an ecceiitric-rod, G, the opposite end of which is formed into a strap, that surrounds an eccentric, G', secured upon the main driving or crank shaft H. The shaft H lis journaled in bearings 7L h', secured to the tops of pillow-blocks h2 h3, that project ontwardly from the bed A.

H' designates a fly or balance wheel,mount ed upon the shaft H, between its bearingblocks, to give steadiness of motion to the several parts of the machine, and also to give through a belt motion of different desired machines. To one end (the front) of the shaft H is secured a crank-arm, H2, provided with a crank-pin, h", upon which is mounted a block, H, that is placed and slides freely in vertical direction in a slot, i, formed in a cross-head, I, to the middle of which, at each side thereof,is connected the piston-rods I' I2, the outer ends of which terminate in pistonheads I3 I", each of which is surrounded at its eXtreme end,at a short distance inward therefrom, with iianges z" t, between which is palced and held the packing I5, which consists of a steel ring, i", at the bottom of the groove, formed by the flanges 'i' i, covered by ditferent desired packing material, l"-as, for instance, cotton, twine, or wicking.

l Zi designate axial bores formed in the piston heads and rods that extend from the ends served that the linkerod connecting the valves E together is bent upwardly at itsv middle and passes over the box h' of the shaft H at the side of the eccentric G'.

- Modiicationsin detail of eonstruction.inay be made in the within-described invention Without departing from the spirit or sacri iicing the advantages thereof. rlhe cylinders are each east in a single piece of metal with one head closed and the other head open, and the open heads are placed in line with each other upon the same vertical and horizontal planes. The cylinders are thus very strong and durable in construction and firnil y bolted to the bedplate, so that they are not liable to displacement. The steam-chests are also cast with the cylinders for strength and durability, and one end of the chest is left open and closed by a cap-piece,which is securely bolted thereto. rlhe pistons and the slotted cross-head are also cast in a single piece of metal, and by these peculiar constructions of parts I am enabled to provide a steam-engine which is very simple, strong, and durable. The valves E are provided with rounded and hollowed out inner faces, bwhich bear at their edges against the valveseat, and by means of this peculiar form the valve will slide with less friction, retain or keep its seat better, and is quicker in operation, and but a small area of surface thereof isiii contact with the seat, and hence less resistance is offered to its movement, and the friction is lessened.

Having thusdescribed my invention, I claiml. In a highspeed engine, cylinders B B', having one open end, said cylinders mounted in the saine plane upon opposite ends of a bed, A, and provided upon one side with steam-chests having ports and inverted-U shaped valves connected together by a twopart link-rod, in combination with said linkrod, a clamp that secures the parts thereof together, a crank-pin that projects from said rod, an eccentric-rod, G', connected at one end to said crank-pin and at its other to an eccentric, G', upon the shaft H, and ily-wheel H', substantially as described.

2. In a high-speed engine,a two-part valveroil, F, secured together by a clamp, f t, hav'- ing a set-serew, j, and pin f5, projecting outwardly from said rod F, in combination with IOO IIO

an eccentric-rod, G, connected at one end to said pin j, and provided at its opposite end with a strap to encircle an eccentric, G', eccentric G', mounted upon a shaft, H, iiywlieel H', crank-arm H2, and cross-head l of the piston-rod, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aiixed my signature in presence of two witnesses.

cH ARLES ARTHUR JAcoBs.

Vitnesses:

P. HENAHAN, J. E. HUNT. 

